Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$142 - $146
Actual value depends on condition, size, and local demand.

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If you want to get around town and back and forth to work in style, Diamondback’s Insight STI-1 is ready! It sports a nimble-handling Diamondback aluminum frame and efficient 700c aluminum wheels for a quick and smooth ride. You’ll love the sleek look and simple operation of the singlespeed drivetrain and the nice all-conditions stopping power of the Tektro linear-pull brakes. The Insight is everything you need for zipping around town. Plus, you get a nice seat, quality Kenda tires and fine Diamondback components stem to stern.
Inspection
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Inspection
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.